APA aipamena

Soars, L., & Soars, J. (2009). American Headway 1: Student book (2nd ed.). New York: Oxford University Press.

Chicago Style aipamena

Soars, Liz, và John Soars. American Headway 1: Student Book. 2nd ed. New York: Oxford University Press, 2009.

MLA aipamena

Soars, Liz, và John Soars. American Headway 1: Student Book. 2nd ed. New York: Oxford University Press, 2009.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.